Fan attachment for sewing-machines.



RH. SCHUMACHER. FAN ATTACHMENTFOR SEWING MACHINES.

APPLlCATlON FILED JUNE 19. 1911.

1,28O 561. Patented Oct. 1, 1918.

: nema; .soii MeoHnn, or JEB SEv bi'rv;

a o c mw mm n s S E W iN M G i NfiL 1312805611? j ifsp me Mess e 1 *ffi fiedbdl a "A plication filed June'19;1 917; Seria1'No."1 75,670;

.To all ham itmag concern: 1

Be it known that L FREDRIGK -MA'CHER5 a'citizen of the United States, residing at Jersey City; in the'county of Hud- 2 5 son and State of New J ersey, have-invented certain -useful Improvements iii- Faii' At-- ;-tacl1mentsfor c Sewing-Machines, of which -theifollowing is aspecification; reference bec ing had therein to the accompany-ing'drawhis invention-relates;broadlyeto a sew "ing machineand more par ticularly has refe'renceztoa fani attachment especially adapted for use on sewing machines.

l5 It-is'theprincipal aim and object this invention to providea device ofwthewabove "character designed to be readily and quickly iattached to the balance wheeli of a sewing machine for dn'ectmgcurrent's of a r" on the operator of the machine"during actuation,

'thereofl: 7 As an equally important. object this inventionembraces 1 the provision of "a -fan atta'chinent jwherein'v-the fan blades are con F structed so as'to assureofthe directing'of currents of air lnwardlytoward the operator eration "of the balance wheel; butare adapted V to be; placed in arcompact collapsed form when thebalance wheel xris StllltU-ECOHSB- 3 5 quently-permit of the closing ofitheflmachine. Ainong the other aims-and objects of jthis inventionmay be recited the provision:"'04- a device i of the charac'ter described? with I a view to compactness, and iniwhich-thenum- 40 ple, the cost of production low and Other improvements and novel details the construction and arrangement of the various parts of the'apparatus wlll be brought out more in detail in the description to follow, which for a'clear understanding of the invention should be considered in connection wlth the accompanying drawings forming a part hereof and wherein is disclosed I for the purpose of illustration a convenient and satisfactory embodiment ofthe invention. .It is to benoted in this connection.

that minor changes'in the construdtion and as arrangement parts may be made without -Fi 'g. '3 is a perspective 'detail' bani- :ventlon;

Tliesexlugs constitute stops and are-p eferably proj ected at substantially right angles 'fromthe outerfaceof th'e'plateas'indicated 11mm drawings.zA-plurality of pins 'indithe fan blades are movably attached: to the -employed and each preferably consists of. a shank- 8=zhavingi a head 9 onithe outer 'end thereof j whilethe inner endi is reduced :and threade'd; exterior-1y as at 10 for =remov-' able ie ngagelnent': "with thecorrespondingly ber' orpartsare fewfthe construction sim-- termed; iopeningsll.infthe platei2; and-adjaeti a 7 'proved meanslfor directing currents of air departing 'V- from the: principle of operation a of thevariousparts a @1 ,I I a f The invention .isfclearly illustrated inithe zaccompanying.drawings,in:whiclr i q i-jiFig'ure l is a front 5 elevation showing? xdevicecattached t0 the balance wheel of h the a is.;a side'elevatio taste,

7 v r Fig. 4: isafragmentarvpersp ctivedetail of the attaching plate; v :vi-xvSiinilar characters of referenceare 'einployed in all oftheabove described views, to indlcatecorresponding-parts 1 or Referring now, more: particularly, ftof the accompanying drawings there is illustrated ',-.a balance 'wheellofa sewing machine while attached to the outer face thereof is an 1 an- -nulariopen attaching plate 2 the free edges of-which areeut in divergent relation with I each other as indicatediat 3 to'facilitate'application, and the plate is also provided with openings 4 through which pass fastening devices 5rdesignedfor securingthe plate lll ffit': substantlallyrigid pos1tion 0n' the wheel. A plurality: of lugs '6 are' struclrout 'from the plate adjacentvthe inner edge thereof-jand a-t ui1i-formly spaced intervals. 5

cated generally by the numeral 7 'arewnow' cent each of the lugs 6 there being preferarranged at uniformly spaced intervals cwith: respect to each other. a With aview toward providing the im-' directly on the operator of the machine,'

bladesindicated in their" entireties by the 1 numeral 12 are employed. There arev desire ably three of these blades and on the inner end ofeach is formed a sleeve 13 being preferably continued from the blade to assume its sleeve-like form. Each sleeve is slit 1011*. gitudinally and transversely whilethe por tion lying therebetweien is bent outwardly" 110 to provide a lug 14 preferably arranged in the plane at substantially right angles to the longitudinal axis of the adjacent pin shank 8 and about which the adjacent sleeve is partially rotatably arranged. The inner edge of the fragmentary"portion of the sleeve as. indicated by. the numeral 15 and. the inner edge of theadjacentlug 14 which is in alinement therewith provide ;a hearing which .is arranged in close relatlon Wltll the outer suria ce of :the plate to limit movement of a the sleeve in one direction while the opposite edge of the sleeves cooperates with the-iadj a cent head ;to limit the i lateral 111037611181) of ;the',fan blade. 'lVith respecttoeaohxfan blade 12 it will be observed that the inner portion of the body thereofi-s arranged inia plane {I173 substantially right angles .to the. -plane iof the attaching plate 2 while .the intermediate portion is twisted as lt1l(i.SO

ithatzthe. outer portion 'willibe arranged substantially at right angles tothe v:planeof the zing adapted to swing outwardly owing "to centrifugal action. However, when the wheel is still, ;the,blades may be partially swung about their pivots so .as'to be'suspended from the plate and be arranged in a compact, collapsed form to perniit'of the application of a CO1' 01- the like on the sewing -Inach1-ne,-not shown. w

-It-is:believ'ed in view ofthe-foregoing descrlption that a further detailed description of the operation of the invention is entirely unnecessary. "Likewse it .is i thought that ;the advantagesof the invention will be readily apparent. V

As many changes could lie-made 'iirtlie above construction and many j apparently widely different embodiments of this zinventioncould be made withoutdeparting from *theiscope thereof, it is intendedzthatall mattencontaineduin the above description or shown in;thejaceompanying drawings shall be interpreted as illustrative and not in a lllnlttld sense. It isalsotobe understood that the language used in the. following claimsis intended to cover all the generic and specific features of the invention heredescribed and all statements .of thescope or the invention which as a matter oflan- .;guage might be:;s aid to fall therebetween.

rality of'fan blades mounteda-thereon, cach bla delconsisting of a body the inner portion of which is iarrangedgat substantiallyright angles *tothe plane ofthe plate the intermediate portion of the body of each blade being twistedand the outer portion of each i blade being arranged i'inzxa plane at substantially right angles to the. plane of v the inner portion .flbut slightly pitched substantially as described. 1

2.1Ali attachment of thefcharaeter described, including an annular open attach- ,ingplate adapted 'forsengageinent with the Jouterfaceof the balance wheel of a sewing .m ttClllllQllLQ-RQS for securing the plate, a pluralityof stops struck out from the plate adacent the nner edge thereoi and arranged at unrformantervals with each other, a plurality of fan blades, a .sleeve formed. on the 11111611 end of each fan blade, a plurality. of beaded PlIlS having their shanks loosely engaged in:thesleeves on theblades topivotally mount the blades and having their extremei'nneriends removably anchored in the plates. adlacentthe stops and 1310JOCt1I1g youtwardly from the outer vface of :the plate,

andga plurality of lugs formed on the inner edges of the sleeves forqcooperatingwith .thestopswonthe:blades for "limiting the movement of :the blades during rotationof the wheeland permitting of the collapsing of the blades ,-into;a compact form when the wheehi'sddle. V t 1-111 testimony whereof I afiix myisignature.

Emma; 11. iscannacaaa c opies o f this p atentanay be optained -forifive cents each, by addressing the Commissionere f Patents,

1 i w hiae an v ifi; It i 

